8268542: serviceability/logging/TestFullNames.java tests only 1st test case

Backport-of: 7400789

Author: GoeLin

test/hotspot/jtreg/serviceability/logging/TestFullNames.java

@@ -59,14 +59,15 @@ public static void main(String[] args) throws Exception {
             fileName
         };
         for (String logOutput : validOutputs) {
+            Asserts.assertFalse(file.exists());
             // Run with logging=trace on stdout so that we can verify the log configuration afterwards.
             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:logging=trace",
                                                                       "-Xlog:all=trace:" + logOutput,
                                                                       "-version");
             OutputAnalyzer output = new OutputAnalyzer(pb.start());
             output.shouldHaveExitValue(0);
             Asserts.assertTrue(file.exists());
-            file.deleteOnExit(); // Clean up after test
+            file.delete();
             output.shouldMatch("\\[logging *\\].*" + baseName); // Expect to see the log output listed
         }
     }